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Series and parallel resonance
2025-12-12Series and parallel resonance? Wuhan UHV specializes in the production of series resonance, with a wide range of product selection and professional electrical testing. To find series resonance, choose Wuhan UHV. Difference between series and parallel resonanceIn a series circuit of resistors, capacitors, and inductors, the phenomenon of power supply, voltage, and current being in phase occurs, which is called series resonance. Its characteristics are: the circuit is purely resistive, the power supply, voltage, and current are in phase, the reactance X is equal to 0, and the impedance Z is equal to the resistance R. At this time, the impedance of the circuit is the smallest and the current is the largest, which may generate high voltage on the inductor and capacitor that is many times larger than the power supply voltage. Therefore, series resonance is also known as voltage resonance. The resonance voltage is superimposed with the original voltage, and parallel resonance: In parallel ci
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Analysis of LC series resonant circuit
2025-12-12Analysis of LC series resonant circuit? Wuhan UHV specializes in the production of series resonance, with a wide range of product selection and professional electrical testing. To find series resonance, choose Wuhan UHV. Analysis of LC series resonant circuitThe understanding method of impedance characteristics during resonance and the analysis of the working principle of LC series resonant circuit need to be divided into three frequency points and bands, namely resonance, input signal frequency higher than the resonance frequency, and input signal frequency lower than the resonance frequency. When the input signal frequency is equal to the resonant frequency, the circuit resonates, and the impedance of the LC series resonant circuit is in the minimum state, which can be equivalent to a pure resistor. At this time, the signal current flowing through the entire resonant circuit is at its maximum. The understanding method of impedance characteristics when the circuit is detuned: When the
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Current testing temperature rise equipment in stock
2025-12-11The fully automatic temperature rise test device under Wuhan UHV can help many power workers conduct various power tests more conveniently.The core technical parameters and performance levels are the basis for price stratification of Wuhan UHV and high voltage temperature rise test bench. For the testing of 110kV-220kV medium and high voltage equipment, the Wuhan UHV-WS300 series test bench has an output current range of 0-5000A and adopts a dry air cooling design. The current waveform distortion is less than 1%, and the temperature measurement accuracy is ± 0.5 ℃, which can meet the temperature rise testing requirements of conventional equipment such as switchgear and circuit breakers. The basic performance configuration makes its price more suitable for general testing scenarios; For ultra-high voltage equipment of 330kV and above (such as GIS and transformer bushings), the UHV-WS500 series test bench increases the output current to 0-10000A, equipped with imported high permeability
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What is the price of the high-pressure temperature rise test bench
2025-12-11The fully automatic temperature rise test device under Wuhan UHV can help many power workers conduct various power tests more conveniently.The core technical parameters and performance levels are the basis for price stratification of Wuhan UHV and high voltage temperature rise test bench. For the testing of 110kV-220kV medium and high voltage equipment, the Wuhan UHV-WS300 series test bench has an output current range of 0-5000A and adopts a dry air cooling design. The current waveform distortion is less than 1%, and the temperature measurement accuracy is ± 0.5 ℃, which can meet the temperature rise testing requirements of conventional equipment such as switchgear and circuit breakers. The basic performance configuration makes its price more suitable for general testing scenarios; For ultra-high voltage equipment of 330kV and above (such as GIS and transformer bushings), the UHV-WS500 series test bench increases the output current to 0-10000A, equipped with imported high permeability
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Working principle of series resonance
2025-12-10Working principle of series resonance? Wuhan UHV specializes in the production of series resonance, with a wide range of product selection and professional electrical testing. To find series resonance, choose Wuhan UHV.Principle of series resonanceWe know that when the circuit frequency f=1/2 π√ LC, resonance occurs in the circuit, and the voltage on the test sample is Q times the output voltage of the excitation transformer high voltage end. Q is the system quality factor, which is the voltage resonance multiple, generally ranging from tens to hundreds or more. First, adjust the output frequency of the variable frequency power supply to induce series resonance in the circuit, and then adjust the output voltage of the variable frequency power supply under the condition of circuit resonance to achieve the test value of the sample voltage. Due to the resonance of the circuit, a smaller output voltage of the variable frequency power supply can generate a higher test voltage on the test sa
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Variable frequency series resonance complete test device
2025-12-10A complete set of testing equipment for frequency conversion series resonance? Wuhan UHV specializes in the production of series resonance, with a wide range of product selection and professional electrical testing. To find series resonance, choose Wuhan UHV.The complete set of frequency conversion series resonance test device applies the principle of series resonance. By adjusting the output frequency of the frequency conversion controller, the inductance L of the reactor in the circuit and the capacitance C of the test sample undergo series resonance. The resonance voltage is the voltage applied to the test sample.The complete set of variable frequency series resonance test device is also known as the variable frequency series resonance AC withstand voltage test device, variable frequency resonance, variable frequency series resonance, series resonance, frequency modulation series resonance, series resonance withstand voltage test device, series resonance test equipment, cable withst
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Supplier of Hardware Thermal Cycle Temperature Rise Test Device
2025-12-09The fully automatic temperature rise test device under Wuhan UHV can help many power workers conduct various power tests more conveniently.In the field of quality inspection and performance evaluation of power fittings, the thermal cycle temperature rise test device for fittings is a key equipment for evaluating the current carrying capacity and thermal stability of power fittings. With the continuous expansion of power grid construction scale and the continuous improvement of transmission capacity, the thermal performance requirements for power fittings are becoming increasingly strict, making professional testing equipment an important tool to ensure the safe operation of the power grid. Choosing a reliable and precise thermal cycling temperature rise test device for metal fittings is of great significance for ensuring product quality and preventing power grid accidents. Among numerous professional equipment manufacturers, Wuhan UHV has become a trusted high-quality supplier in this
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8/20 Ranking of companies producing impulse current generators
2025-12-09The lightning impulse voltage generator test device under Wuhan UHV can help many power workers conduct various power tests more conveniently.In the field of power equipment testing and experimental research, the 8/20 impulse current generator is a key equipment for simulating the impact of lightning current on the performance of lightning protection devices. With the continuous improvement of lightning protection requirements in the power system, the 8/20 impulse current test has become an important part of the type testing of lightning protection equipment such as lightning arresters and surge protectors. Choosing a reliable and accurately tested surge current generator is of crucial importance in ensuring the safety and reliability of lightning protection devices. Among numerous professional equipment manufacturers, Wuhan UHV has become a trusted high-quality supplier in this field due to its profound technical accumulation and rich engineering experience.The technical performance o
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Series resonance has high cost-effectiveness and is a reliable choice
2025-12-08When choosing any measuring instrument, we hope to find a cost-effective one. Of course, when choosing a series resonant instrument, we also ask if it is a cost-effective measuring instrument? In fact, from some aspects, it can fully tell everyone that series resonance has high cost-effectiveness and is a trustworthy choice.It has very accurate measurement data, like many people who initially choose other measuring instruments but the measurement results are not good, which not only wastes a lot of their time, but also leads to the final measurement results not being what they thought. So what value does it have after choosing it? It will only make oneself bear more losses, but in fact, it is not as everyone thinks, and not every measuring instrument's data is inaccurate.Take the series resonance equipment as an example, it has very accurate measurement data, can provide the most direct reference suggestions, and can solve social problems with very good guarantees. The entire opera
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Price trend of transformer temperature rise test equipment
2025-12-08The fully automatic temperature rise test device under Wuhan UHV can help many power workers conduct various power tests more conveniently.In the field of power equipment testing and experimentation, transformer temperature rise testing equipment is a key device for evaluating transformer load capacity and thermal stability. With the continuous improvement of reliability requirements for power system operation, temperature rise testing has become an important part of transformer type testing and factory inspection. Choosing reliable and precise temperature rise testing equipment is of great significance for ensuring the safe operation of transformers and extending equipment life. Among numerous professional equipment manufacturers, Wuhan UHV has become a trusted high-quality supplier in this field due to its profound technical accumulation and rich industry experience.The technical performance of transformer temperature rise test equipment is an important criterion for measuring the va
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Variable frequency series resonance withstand voltage test
2025-12-05Variable frequency series resonance withstand voltage test? Wuhan UHV specializes in the production of series resonance, with a wide range of product selection and professional electrical testing. To find series resonance, choose Wuhan UHV. Composed of a variable frequency power supply, excitation transformer, high-voltage reactor, and capacitive voltage divider. The capacitor and reactor of the test sample form a series resonant connection; The voltage divider is connected in parallel to the test sample to measure the resonant voltage on the test sample and provide an overvoltage protection signal; The frequency modulation power output is coupled to the series resonant circuit through an excitation transformer, providing excitation power for series resonance. Working principle of frequency conversion series resonance withstand voltage testBy adjusting the output frequency of the variable frequency controller, resonance occurs between the inductance L of the reactor in the circuit and
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Frequency Modulation Series resonant equipment
2025-12-05FM series resonant equipment? Wuhan UHV specializes in the production of series resonance, with a wide range of product selection and professional electrical testing. To find series resonance, choose Wuhan UHV. The frequency modulation series resonance device uses the principle of series resonance, excites the series resonance circuit with an excitation transformer, adjusts the output frequency of the variable frequency controller, and causes the circuit inductance L and the test sample C to resonate in series. The resonance voltage is the voltage applied to the test sample. The frequency conversion resonance test device is widely used in industries such as power, metallurgy, petroleum, and chemical engineering, and is suitable for the handover and preventive testing of high-capacity, high-voltage capacitive specimens. Technical parameters of frequency modulation series resonance equipmentRated output voltage: 0-66kV (effective value) and belowOutput frequency: 20-300HzResonant voltage
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Price of switch socket temperature rise tester
2025-12-02The fully automatic temperature rise test device under Wuhan UHV can help many power workers conduct various power tests more conveniently.The switch socket temperature rise tester is a key detection equipment for evaluating the safety and reliability of low-voltage electrical accessories, and its value is determined by the importance and technical complexity of the functions it performs. This instrument is mainly used to simulate the heating situation of products such as switches, sockets, and wiring terminals under long-term rated current and overload current conditions. It accurately measures the temperature rise of their conductive circuits and easily accessible components to ensure that the products comply with national safety standards and prevent the risk of fire or electric shock caused by overheating. As a professional supplier of electrical testing equipment, Wuhan UHV's temperature rise test device has high reference value in the industry.The core technical indicators of
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The principle of series resonance
2025-12-02The principle of series resonance? Wuhan UHV specializes in the production of series resonance, with a wide range of product selection and professional electrical testing. To find series resonance, choose Wuhan UHV. The variable frequency series resonance test device, also known as series resonance, is composed of a variable frequency power supply, excitation transformer, reactor, and capacitive voltage divider. The capacitor and reactor of the test sample form a series resonant connection; The voltage divider is connected in parallel to the test sample to measure the resonant voltage on the test sample and provide an overvoltage protection signal; The frequency modulation power output is coupled to the series resonant circuit through an excitation transformer, providing excitation power for series resonance. The principle of series resonanceUse an excitation transformer to excite a series resonant circuit, adjust the output frequency of the variable frequency controller, and make the
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Series resonance quality factor
2025-12-02Series resonance quality factor? Wuhan UHV specializes in the production of series resonance, with a wide range of product selection and professional electrical testing. To find series resonance, choose Wuhan UHV. The quality factor in series resonance is an electrical and magnetic quantity. A quality indicator that represents the ratio of energy stored in an energy storage device (such as an inductor, capacitor, etc.) or resonant circuit to the energy lost per cycle; The Q value of the reactive element in a series resonant circuit is equal to the ratio of its reactance to its equivalent series resistance; The larger the Q value of a component, the better the selectivity of the circuit or network composed of that component. For non radiative systems, such as Z=R+jX, then Q=| X |/R. SI unit: 1 (one). Q=reactive power/active power, and the quality factor of a series resonant circuit is the ratio of the characteristic impedance of the series resonant circuit to the circuit resistance. In
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High quality series resonance and strong usability
2025-12-01After using any equipment in a factory for a period of time, its performance, battery voltage, and other aspects need to be tested to see if there are any problems. If there are problems, they need to be solved to ensure its entire testing. When purchasing a series resonant (also known as a cable withstand voltage tester), many people also ask how it is and whether it is suitable for their own choice? In fact, series resonance is a measuring instrument with very high quality and strong usability.Firstly, all the raw materials selected by the manufacturer for the production of series resonance are of relatively high quality and very sturdy, and will also be tested by various departments. Only after passing the test will they be put into the production process, which naturally ensures that the series resonance selected by the manufacturer fundamentally determines its overall quality. Therefore, if you want to choose a better series resonance, you can still choose series resonance. Its hi
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What are the characteristics of using variable frequency series resonance?
2025-12-01Series resonance can also be divided into many different types, for example, variable frequency series resonance is one of them. Before choosing a variable frequency series resonance, you definitely need to understand its usage characteristics in advance to know if it can bring you very high practical value.Firstly, frequency conversion can be wirelessly controlled and transmitted through Bluetooth. Any device needs to control it during signal transmission in order to achieve a very good transmission effect. Therefore, when using frequency conversion series resonance, if its transmission performance needs to be operated by oneself, personally counting and setting data will only increase the difficulty of the entire measurement, and even waste more time on it. However, after choosing the variable frequency series resonance, one can feel that its Bluetooth output effect is very high, saving oneself a lot of time and energy. It is indeed a very worthwhile choice for oneself to choose the
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Variable frequency resonant voltage withstand test device
2025-12-01Variable frequency resonant voltage withstand test device? Wuhan UHV specializes in the production of series resonance, with a wide range of product selection and professional electrical testing. To find series resonance, choose Wuhan UHV. The frequency conversion resonance withstand voltage test device is widely used in industries such as power, metallurgy, petroleum, chemical, etc. It is suitable for high-capacity and high-voltage capacitive test samples, such as generators, transformers, etc GIS、 Handover and preventive tests for high-voltage cross-linked cables, transformers, bushings, etc. Principle of frequency conversion resonance withstand voltage test deviceWe know that when the circuit frequency f=1/2 π√ LC, resonance occurs in the circuit, and the voltage on the test sample is Q times the output voltage of the excitation transformer high voltage end. Q is the system quality factor, which is the voltage resonance multiple, generally ranging from tens to hundreds or more. Firs
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Brand ranking of impulse voltage tester
2025-11-28The lightning impulse voltage generator test device under Wuhan UHV can help many power workers conduct various power tests more conveniently.In the fields of electrical equipment manufacturing, power system operation, and scientific research and testing, the impulse voltage tester is the core equipment for evaluating the insulation performance of equipment and ensuring the safe and stable operation of the power grid. It mainly tests the insulation strength and tolerance of various high-voltage electrical appliances, power transformers, insulators and other products by simulating lightning impulse voltage and operating impulse voltage. Faced with numerous brands in the market, users often need to consider multiple factors such as technical strength, product performance, market applications, and service support when choosing, in order to make the most suitable judgment for their own needs. In this field, Wuhan's UHV power equipment production has established a significant position i
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The conditions for generating series resonance are
2025-11-28What are the conditions for generating series resonance? Wuhan UHV specializes in the production of series resonance, with a wide range of product selection and professional electrical testing. To find series resonance, choose Wuhan UHV. The series resonance withstand voltage test is a new method of high voltage testing that uses the inductance of a reactor and the capacitance of the test object to form an LC series circuit, adjusts the voltage frequency output of the variable frequency power supply, achieves series resonance, and obtains high voltage on the test object. It has been well received by experts and has been widely used at home and abroad. Currently, we have developed many detection instruments using the principle of series resonance, including series resonance test devices, cable variable frequency series resonance test devices, substation variable frequency series resonance test devices, and resonant boost devices for CVT inspection. According to the principle of resonanc
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